Lamp clamp



FIG. 1 is a perspective view of the lamp clamp, which is shown supporting a fluorescent lamp, the fluorescent lamp being depicted by means of broken lines being shown for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view of the lamp clamp;

FIG. 3 is a bottom plan view of the lamp clamp;

FIG. 4 is a first side elevational view of the lamp clamp;

FIG. 5 is a second side elevational view of the lamp clamp; and,

FIG. 6 is a front elevational view of the lamp clamp. 

The ornamental design for a lamp clamp, as shown and described. 